Cutting-rolls.



J. LE PAGE. CUTTING ROLLS. APPucATloN FIL-EDU314. 191s.

l,l83,574. PatentedMayl; 1916.

-JULES 'Ln PAGE, or DARLINGTON, iNDIA'NA.

CUTTING-ROLLS.

Specification of Letters Patent.

Patented May 16, 1916.

Application filed February 24, 1916. .Serial No. 80,167. y

products, and has especial reference to those processes 1n which cereals are cleanly cut or broken to produce cracked -or steel-cutproducts. Heretofore in the preparation of such products a very considerable amount of the material treated has been lost by the crushing or grinding effect of the rolls, and'rendered comparatively worthless. By the use of my improvements I am able to avoid practically all ofy the crushing or grinding action which has been inseparable yfrom theA operation of other rolls or machinery in making the products described. And Iam thereby able greatly to increase the proportion of cracked or cut materiali and correspondingly to reduce the proportion of flour or meal which, in this line of manufacture, becomes a by-product.

The principles of my invention are illustrated in the drawings, in Which- Figure 1 is a top view of a portion of one pair of my improved rolls; Fig. 2 is a comparatively enlarged end view of the fast moving roll; Fig. 3 is a top view of an enlarged portion of the slow moving roll; Fig. 4c is a sectional view of a portion of the two rolls, as shown in Figs. 2 and 3, the fast moving one being in" modified form.

Further describing my invention with reference to the drawings: 1 represents-a fast moving or feeding roll, which is suitably journaled and is driven by the gear 2. The said roll'is provided with any desired number of corrugations or cutting edges 3, sepa- -rated from each other by' longitudinal grooves 4, extending from end to end of the roll in lines parallel with the axis of the roll. The said corrugations are rounded or U-shaped at the bottom, thereby givingthe corrugations very thin blades and sharp cutting edges.V They should preferably be forwardly inclined inthe direction of the1r rotation, and the faces may be formed 1n the radial lines a'a. The slow moving roll 5 is Vprovided with a' single corrugation 6, 6', 6,

etc., extending in a continuous helix fr om end to end4 of the roll. This corrugatlon is formed by means ofa single groove or depression '7, 7 Tand 7 This groove is also rounded or U-shaped 1n cross section, giving the helical corrugatlon a sharp edge and a thin cutting body. It will be noted that in .both the rolls this form of depression or groove provides an ample space within which the cut'portions ofl material may be received in the process of cutting or'cracking without being crushed.

The fastmoving roll shown in Fig. 1 has the grooves 10, 10', etc., slightly undercut,

thereby providing something more of `space within which the material when cut may be received and also giving the cutting knives 11, 11', etc., a more distinctly forward inclination than is provided in Fig. 2. It will be noted that while the corrugations shown in Fig. 2 have the forward faces practically on the radial line of the rolls, those in Fig.

1 at the' bottom are continued backwardly lfrom the radial line. But'in either form a very sharp cutting edge is formed and set at an angle adapted best to strike and cut the kernels of grain when presented to their action. Sharp Aclean cuts are produced onopposite sides of the grains by the action of the knives or corrugations on the slow roll. The kernels are cut into distinct fragments producing little or no fine meal. And such fragments are received -with the roomy grooves between the knives without presslre suiicient materially to break or crush them.

The corrugations of the slow moving roll are shown as produced by a single helical groove extending from end to end thereof. This makes a. simple automatic machine operation available in cutting or recutting the rolls. In like manner aplurality of helical corrugations may be produced by a corresponding number of grooves. This, however, will increase the rapidity with which the corrugations advance and the angle of their inclination, and tend to produce a crushing effect on the cut grains if carried too far. It will be noted, however, that, in

the drawings, the grooves forming the corrugations are represented as much wider, and the rolls themselves as of much less diameter than in' actual practice. And the actual pitch of the helical knives or corruroll provided with sharp fast roll provided with a multiplicity of sharp edged corrugations substantially parallel to the longitudinal axis of said roll separated from each other by rounded rooves, and a slow roll provided with sharp ledged-helical corrugations extended from 3. In cutting rolls the combination of a fast roll provided with a multiplicity of sharp edged corrugations and undercut substantially parallel tothe longitudinal axis of said roll separated from each other by rounded grooves, and a slow roll provided with sharp edged helical corrugations extended from end to end of the roll and separated from each other by rounded grooves.

4,. In cutting rolls the ,combination of a edged corrugations substantially parallel to its longitudinal axis and separated from each other by rounded grooves, and a roll provided with a substantially continuous sharp edged corrugation extended helically from end to end thereof and formed by a corresponding continuous groove rounded at the bottom.

5. In cutting rolls the combination of a roll provided with sharp edged corrugations substantially parallel to its longitudinal axis forwardly inclined in the direction of their rotation and separated from each other by rounded grooves, and a roll provided with a substantially continuous sharpl ed ed cor rugation extended helically from en to end thereof and formed by a corresponding continuous lgroove rounded at the bottom.

6. In cutting rolls the combination of a roll provided with sharp edged corrugations substantially parallel to its longitudinal axis forwardly inclined and undercut in the direction of their rotation and separated from each other by rounded grooves, and a roll provided with a substantially continuous sharp edged corrugation extended helically from end to end thereof and formed by a corresponding' continuous groove rounded at the bottom.

7 In cutting rolls the combination of a fast roll provided with a multiplicity of ysharp edged corrugations substantially parallel to its longitudinal axis forwardly 1nclined in the direction of their rotation separated from each other by rounded grooves, and a slow roll provided with a sharp edged helical corrugation extended from endto end of the roll. each convolution of said corrugation being separated from the adiacent convolution by a groove rounded at the bottom.

In witness whereof, I have hereunto subscribed my name this lit-h day of February, 1916, 1n the presence of two subscrlblng witnesses.

JULES LE PAGE.

Witnesses:

C. K. CHAMBERLAIN. A. S. PHILLIPS. 

